Perkins 6-354T marine diesel engine

[sea...@my-dejanews.com]

I have a ca. 1981 Perkins 6-354T diesel in my 32' boat. Engine rated at 150
HP@2400 rpm. S/N TU70025U592439F. I would like to know how to drain the raw
water system for winter layup- the manual has zip about this. Thanks, Curt
Johnson

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[Gould 0738]

I have about the same engine.

On mine, the raw water hose enters the turbo after cooler housing. Removing
this will drain the raw water from the upper half of the system. Be really
careful if you remove this hose and if you still have the original after
cooler....they are pot metal and it may have corroded. (I can tell you exactly
where to get a new, bronze after cooler should you bust the fitting off). Once
the hose is off and the system is vented, the
lowest raw water point on my enigine is the oil cooler on the port side of the
engine. Removing this raw water hose fitting should result in the raw water
draining out of the engine.

Back to the aftercooler, you might want to check into the
stability of yours. I discovered the problem a few years ago on an engine about
the same age. I had a mechanic I employed at my business aboard to help with
installing a rebuilt injector pump. I got the bright idea that it would pay to
pull the turbo after cooler and take it to a radiator shop for a boil out. The
mechanic (certified diesel wrench) removed the hose clamps from the intake
fitting and pulled on the rubber hose. The whole fitting crumbled apart, the
nipple was still in the end of the hose, and raw water was pouring into the
bilge (since he hadn't remembered to throw the valve on the thru hull). After
shutting off the sea cock, and stopping the water
we looked carefully at the situation. The mechanic said
"Oh migawd, I'm really sorry!" I said, "You've just done me an incredible
favor! That part was on the verge of failure, had it failed on a cruise I would
have had a roasted engine and a sinking boat to try to deal with at the same
time. Happening here at the dock, not qute so large a problem."

Not so large a problem, but not a very small bill either. Could have bought a
decently running used car for the price of the new aftercooler.

Funny footnote; The Perkins dealer was hawking after cooler and heat exchanger
rebuilds at the boat show that winter. My busted and (it turned out) partially
clogged after cooler was on display as the "before" example at the show.
As I walked by, a guy working the booth asked me "Does your aftercooler look
like that?" He was probably surprised when I got to answer that it used to,
"exactly"!

[JBHOUTEX]

I don't think they reccommend draining which is probly the reason it is not in
the manual.I had a 6-354 for about 5 years and sold a bunch more boats with
Perkins power.I would open the raw water pump and spray some WD40 or LPS 3 in
there to slow the rusting.I would also remove the pipe plugs from the risers
and spray in there. Where do you do your boating??
James Boldebuck
Austin,TX